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Scolastika Mariani

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Author-ID : 315633

Agriculture, Biological Sciences & Forestry Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Education Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Physics Social Sciences Other

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Analysis of Location and Causes Of College Students' Errors In Probabilistic Problem Solving Agoestanto, Arief; St. Budi Waluya; Scolastika Mariani; Annisa Salma Zakiyyah
Kreano, Jurnal Matematika Kreatif-Inovatif Vol. 16 No. 1 (2025): Kreano, Jurnal Matematika Kreatif-Inovatif
Publisher : UNNES JOURNAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/kreano.v16i1.22111

Problem solving is a necessity for college students, including probabilistic problems. However, student errors in solving these problems continue to occur, necessitating an analysis of the location and causes. The goal of this research is to identify the locations and causes of probabilistic problem-solving errors. This is a qualitative research. The study's subjects were nine students from Semarang State University's Mathematics Education Study Program with low Student Academic Ability (SAA). Based on the subject's problem-solving outcomes, the location and sources of errors in solving probabilistic issues using the Newman Procedure were thoroughly investigated. Data analysis starts with minimising data, then presents data, and finally draws conclusions. Checking the validity of the data using triangulation approaches, such as comparing test results to interview findings and comparing study subjects' outcomes. The findings of this study revealed that the research subjects made errors during the transformation, process skill, and encoding processes. Students' errors are caused by a lack of understanding of the strategy that must be employed in addressing probabilistic problems, topic confusion between the use of permutations and combinations, and confusion in identifying the sample space when taking one or more items in the experiment. The study's findings are likely to inspire and inform lecturers on how to use appropriate learning tactics to limit the possibility of student errors when tackling probabilistic questions. The conclusion of this research is that student errors in probabilistic problem solving lie in the transformation stage, the calculation process , and the error of writing answers so that it is necessary to be given the task of practicing probability problem solving in stages and there are brief instructions in developing a solution strategy. Abstrak Pemecahan masalah sangat penting untuk dikuasai mahasiswa, salah satunya pada masalah probabilistik. Namun, masih sering dijumpai kesalahan mahasiswa dala menyelesaikan masalah tersebut, sehingga perlu dilakukan analisis letak maupun penyebabnya. Penelitian kualitatif ini bertujuan menganalisis letak serta penyebab kesalahan pemecahan masalah probabilistik. Subjek penelitian sebanyak 9 mahasiswa Pendidikan Matematika Universitas Negeri Semarang dengan Kemampuan Akademik Mahasiswa (KAM) rendah. Dari hasil pemecahan masalah subjek dieksplorasi secara mendalam letak dan penyebab kesalahan dalam memecahan masalah probabilistik berdasarkan Prosedur Newman. Analisis data diawali reduksi data, kemudian penyajian data, dan diakhiri dengan penarikan simpulan. Pemeriksaan keabsahan data dengan teknik triangulasi yaitu membandingkan hasil tes dengan hasil wawancara, serta membandingkan hasil subjek-subjek penelitian. Hasil penelitian ini menunjukkan subjek penelitian mengalami kesalahan pada langkah transformation, process skill dan encoding. Adapun penyebab kesalahan adalah tidak mengetahui strategi yang harus digunakan dalam memecahkan masalah probabilistik, subjek kebingungan antara penggunaan permutasi dan kombinasi, kebingungan dalam menentukan ruang sampel antara pengambilan 1 objek dan beberapa objek dalam percobaan. Hasil penelitian ini dapat dijadikan dasar bagi dosen dalam menggunakan strategi pembelajaran yang tepat untuk mengurangi potensi kesalahan mahasiswa dalam menyelesaikan masalah probabilistik. Simpulan dari penelitian ini adalah kesalahan mahasiswa dalam pemecahan masalah probabilistik terletak pada tahap transformasi (transformation), proses perhitungan, dan kesalahan penulisan jawaban sehingga perlu diberi tugas latihan soal-soal pemecahan masalah probabilitas secara bertahap dan terdapat petunjuk singkat dalam menyusun strategi penyelesaian.

META-SINTESIS: SELF-ESTEEM DALAM HARD SKILL MATEMATIK SISWA Cholifah, Cholifah; Mariani, Scolastika; Agoestanto, Arief
MUST: Journal of Mathematics Education, Science and Technology Vol 10 No 1 (2025)
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/must.v10i1.26830

Challenges in mathematics education are becoming increasingly complex, particularly in achieving a balance between students’ hard skills and soft skills. One crucial aspect of soft skills is self-esteem. This article aims to examine the relationship between self-esteem and students’ mastery of mathematical hard skills through a meta-synthesis approach. Data were collected from articles published between 2020 and 2025, focusing on self-esteem in the context of mathematics proficiency. The search strategy utilized the Publish or Perish software, Google Scholar, and the PRISMA 2020 framework. The analysis results indicate that self-esteem has a positive impact on the mastery of mathematical hard skills by fostering students’ confidence, creativity, and learning independence. This study highlights the importance of incorporating affective aspects—particularly self-esteem—into instructional strategies to optimally support students’ cognitive abilities

Tracing the Footsteps of Ethnomathematics in Indonesian High School Education: Literature Metasynthesis and Trend Analysis 2015-2025 Jatnika, Sugih Nugraha; Agoestanto, Arief; Mariani, Scolastika
Plusminus: Jurnal Pendidikan Matematika Vol. 5 No. 2 (2025): July
Publisher : Department of Mathematics Education Program IPI Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31980/plusminus.v5i2.2995

Matematika sering dianggap sebagai pelajaran yang abstrak dan jauh dari kehidupan nyata. Padahal, konsep matematika banyak ditemukan dalam budaya lokal Indonesia. Penelitian ini bertujuan mengkaji penerapan etnomatematika dalam pembelajaran matematika di SMA melalui Tinjauan Literatur Sistematis (SLR) terhadap 20 artikel yang terbit antara 2015–2025. Artikel tersebut mencakup pengembangan bahan ajar, eksperimen kelas, serta integrasi unsur budaya seperti permainan tradisional, rumah adat, seni, dan tradisi lokal, terutama pada materi geometri, aljabar, dan bilangan. Hasil sintesis menunjukkan bahwa 85% studi melaporkan peningkatan pemahaman konsep, dan 70% menyebut peningkatan motivasi dan keterlibatan siswa. Etnomatematika juga memperkuat identitas budaya dan sikap positif siswa terhadap matematika. Pendekatan ini efektif menjembatani materi akademik dengan kehidupan nyata siswa. Kesimpulannya, etnomatematika layak diintegrasikan dalam kurikulum SMA untuk menciptakan pembelajaran yang kontekstual, bermakna, dan berakar pada budaya lokal. Mathematics is often considered an abstract subject, one that is far removed from real life. Mathematical concepts are widely found in local Indonesian culture. This study aims to examine the application of ethnomathematics in high school mathematics learning through a Systematic Literature Review (SLR) of 20 articles published between 2015 and 2025. The articles cover the development of teaching materials, classroom experiments, and the integration of cultural elements such as traditional games, traditional houses, art, and local traditions, especially in geometry, algebra, and number materials. The synthesis results showed that 85% of studies reported an increase in conceptual understanding, and 70% mentioned an increase in student motivation and engagement. Ethnomathematics also strengthens students’ cultural identity and positive attitudes towards mathematics. This approach effectively bridges academic material with students’ real lives. In conclusion, ethnomathematics is a valuable addition to the high school curriculum, as it fosters contextual, meaningful, and culturally rooted learning.

A Systematic Literature Review of: Computational Thinking in Mathematics Classrooms Pramesti, Santika Lya Diah Pramesti; Mariani, Scolastika; Hendikawati, Putriaji; Wardono; Waluya, St Budi; Pujiastuti, Emi; Dewi, Heni Lilia
RANGE: Jurnal Pendidikan Matematika Vol. 7 No. 1 (2025): Range Juli 2025
Publisher : Pendidikan Matematika UNIMOR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/jpm.v7i1.9440

In today’s rapidly evolving digital era, the ability to think computationally is no longer confined to computer science it has become essential across disciplines, including mathematics. This study integrates computational thinking (CT) into mathematics learning by analyze its development, benefits, and implementation challenges. Computational thinking which includes abstraction, algorithms, decomposition, and pattern recognition, is considered a crucial component in improving students' mathematical learning. These insights are intended to inform educators, policymakers, and researchers seeking to align mathematics instruction with contemporary technological and pedagogical advancements. Utilizing a systemic literature review as a qualitative method, by 37 peer-reviewed articles published between 2019 and 2024 in the Scopus database were examined. Through qualitative thematic analysis, key insights were identified across cognitive and affective dimensions. The review suggests that CT may support students’ development in problem-solving, logical reasoning, and conceptual abstraction, while also contributing to affective aspects such as motivation, self-confidence, and self-regulated learning. However, several barriers hinder its effective implementation, including insufficient teacher training, limited infrastructure, and curricular constraints. The study highlights the necessity for targeted teacher training initiatives and institutional support to facilitate CT integration.

A Hypothetical Learning Trajectory Design for Social Arithmetic to Fostering Computational Thinking and Self-Regulated Learning Abilities Pramesti, Santika Lya Diah; Mariani, Scolastika; Hendikawati, Putriaji; Kartono, Kartono; Masrukan, Masrukan
EDUKASIA Jurnal Pendidikan dan Pembelajaran Vol. 6 No. 2 (2025)
Publisher : LP. Ma'arif Janggan Magetan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62775/edukasia.v6i2.1493

This study aims to design a Hypothetical Learning Trajectory (HLT) on the topic of social arithmetic to address learning obstacles related to students’ computational thinking (CT) and self-regulated learning (SRL) abilities. Employing an Educational Design Research (EDR) approach, the study developed the Missouri Mathematics Open-Ended Problem-Based Learning (MiMOPBL) model supported by an e-module based on the Predict–Observe–Explain (POE) strategy. The HLT integrates CT and SRL by guiding students through prediction, observation, and explanation stages while solving open-ended contextual problems. Validation results confirmed that the instructional tools—including lesson plans, student worksheets, e-modules, CT and SRL instruments—are both valid and reliable. Content validity assessed using Aiken’s V showed values ranging from 0.80 to 0.98, while reliability testing using Cronbach’s Alpha indicated high internal consistency (SRL: α = 0.85; CT: α = 0.89; observation sheet: α = 0.88). These results indicate that the tools are suitable for use in mathematics classrooms. Although limited to the design phase and one topic, the study offers a structured, competency-based learning design that supports student engagement, problem-solving skills, and independent learning. Future research should explore the effectiveness of this learning design across various topics and student groups.

STRUCTURAL EQUATION MODELS: MATHEMATICAL REASONING ABILITIES AND GEOMETRIC PROBLEM-SOLVING ABILITIES Anggoro, Abdurrobbil Falaq Dwi; Wardono, Wardono; Mariani, Scolastika; Susilo, Bambang Eko; Hidayat, Riyan; Tommy Tanu Wijaya
Jurnal Math-UMB.EDU Vol. 12 No. 3 (2025): JULY
Publisher : Universitas Muhammadiyah Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36085/mathumbedu.v12i3.8659

This study aims to test the compatibility of structural equation (SEM) models to determine the relationship between mathematical reasoning ability and geometry problem solving ability. Using an ex-post facto research design, this study took a random sample of 100 students from a total of 296 mathematics education student population at a university in Lubuklinggau. Data were collected through mathematical reasoning tests and geometry problem-solving tests, then analyzed using the Lisrel 8.8 and SPSS programs. The results of the analysis show a very significant path coefficient, which proves that mathematical reasoning ability has a positive direct relationship with geometry problem-solving ability. This means that an increase in reasoning skills will be followed by an increase in the ability to solve geometry problems. In conclusion, this study confirms the existence of a direct relationship between the two variables, where mathematical reasoning ability contributes 15.13% to the improvement of geometry problem-solving ability. Keywords: Ability, Mathematical reasoning, Geometric Problem Solving, SEM, Lisrel

Analysis of the Preliminary Study of Mathematical Communication Ability of Grade VII Students Anjarwati, Eka; Mariani, Scolastika; Dewi, Nuriana Rachmani
Unnes Journal of Mathematics Education Vol. 14 No. 1 (2025): Reguler Issue
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/ujme.v14i1.19722

This study aims to determine students' mathematical communication ability in solving mathematical problems. This was descriptive research. The research subjects comprised 32 students in class VII-I SMP Negeri 39 Semarang. Data collection consists of a written test and an interview. Written tests were conducted to measure the achievement of indicators of mathematical communication ability, and interviews were conducted to obtain more in-depth data from students regarding mathematical communication ability. The results showed that in the first indicator, namely the ability to write to explain ideas or solutions in their own language, students achieved the very good category with a percentage of 93.75%. The second indicator, the ability to describe an idea or solution in the form of a diagram, table, or graph, is in the sufficient category with a percentage of 62.5%. The third indicator, the ability to express problems into mathematical models, obtained a low category with a rate of 43.75%. The fourth indicator, the ability to identify known information, what is asked, and the completion step, is in the category of sufficient, with a percentage of 56.25%. Meanwhile, the fifth indicator, namely the ability to draw conclusions, is in the poor category with a rate of 37.5%. These findings indicate that although the ability to write mathematical ideas is excellent, improvements are still needed in the indicators of mathematical model preparation and the conclusions drawn.

HOW IS THE DYNAMIC THINKING PROCESS OF PROFICIENT’ STUDENTS IN SOLVING TRANSFORMATION GEOMETRY PROBLEMS? Megita Dwi Pamungkas; Stevanus Budi Waluya; Scolastika Mariani; Isnarto Isnarto
Jurnal Ilmiah Ilmu Terapan Universitas Jambi Vol. 9 No. 1 (2025): Volume 9, Nomor 1, March 2025
Publisher : LPPM Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jiituj.v9i1.36804

Dynamic thinking is a crucial cognitive skill that enables students to solve complex problems in geometry effectively. This study investigates the characteristics of dynamic thinking among prospective mathematics teachers, focusing on the four key aspects: technique, conceptualization, monitoring, and perception. While previous research has identified these aspects, the specific problem-solving characteristics of dynamic thinking in mathematical contexts remain unexplored. This qualitative study was conducted at Tidar University, involving 54 prospective mathematics teachers identified as dynamic thinkers. Data were collected through a two-stage problem-solving test, structured observations, and in-depth interviews. The research instruments underwent a validation process to ensure reliability. Data analysis followed a systematic approach involving reduction, presentation, and verification to extract patterns of dynamic thinking among proficient problem solvers. The results indicate that students who exhibit proficient dynamic thinking demonstrate completeness and consistency in all four aspects. They effectively integrate multiple strategies, adapt their approaches in response to challenges, and maintain a reflective understanding of their problem-solving processes. Additionally, proficient dynamic thinkers show a higher degree of flexibility and spatial reasoning in geometry problems. This study contributes to the existing body of knowledge by identifying and describing the specific characteristics of dynamic thinking in mathematical problem-solving. The findings provide valuable insights for teacher education programs, emphasizing the need to cultivate dynamic thinking skills among prospective math educators. Future research can explore dynamic thinking across different mathematical domains and cognitive frameworks.

Development of an android-based educational game to improve junior high school students’ mathematical numeracy skills Adrillian, Hendrisa; Mariani, Scolastika; Prabowo, Ardhi
Al-Jabar: Jurnal Pendidikan Matematika Vol 16 No 2 (2025): Al-Jabar: Jurnal Pendidikan Matematika
Publisher : Universitas Islam Raden Intan Lampung, INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/ajpm.v16i2.27869

Purpose: This research aims to develop learning media that is assisted by Android-based educational game is valid, practical, and effective for improving mathematical numeracy skills.Method: The flow utilized is the multimedia development life cycle, which consists of concept, design, obtaining context material, assembly, testing, and distribution. The validity of the media is proven through evaluations by media, material, and instructional module experts, while practicality is shown through the students’ reaction questionnaires.Findings: The validity results were obtained by media experts 0,92 (very high); material experts 0,913 (very high); and instructional module experts 0,8615 (very high). Then, the results of the student reaction questionnaire obtained a percentage of 83% with good criteria. Meanwhile, the results of effectiveness are explained by the right party t-test obtained , then was rejected.Significance: The research results demonstrate that developing learning media assisted by an Android-based educational game is valid, practical, and effective for improving mathematical numeracy skills and it has the potential to be utilized as an alternative learning media to support mathematics instruction in schools.

Practicality and Effectiveness of the COMESC Learning Model in Fostering Statistical Thinking Skills Nio, Tan Hian; Suyitno, Hardi; Kartono, Kartono; Mariani, Scolastika
Kognitif: Jurnal Riset HOTS Pendidikan Matematika Vol. 5 No. 3 (2025): July - September 2025
Publisher : Education and Talent Development Center Indonesia (ETDC Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/kognitif.v5i3.1184

The COMESc learning model is a specialized instructional approach developed through research and development to address university students’ weaknesses in statistical thinking. These weaknesses include challenges in problem identification, hypothesis formulation, selection of appropriate statistical methods, interpretation of statistical relationships, application of significance testing, execution of calculations, comparison of sample and critical values, decision-making, and result interpretation. This study aimed to evaluate the practicality and effectiveness of the COMESc model in improving students’ statistical thinking skills. A limited field trial was conducted with 27 participants over 10 class sessions. Qualitative data were collected through open-ended questionnaires and in-depth interviews, while quantitative data were obtained from closed-ended questionnaires and tests. Results indicated that the COMESc model is highly practical (95.65%) and effective, with 100% of participants achieving a minimum average test score of 73. The model also improved learning outcomes, enhanced performance, and stimulated active learning dynamics. Its strengths lie in ease of implementation, structured problem-solving syntax, and capacity to foster deeper statistical reasoning, while its main limitation is the need for instructor patience during initial implementation.

Co-Authors 'Ulya, Rosyidatul Abd. Rasyid Syamsuri Abduh, M. Faisal Adrillian, Hendrisa Agus Yulianto Ahmad Faridh Ricky Fahmy Ahmad Gufron Aini, Aulia Hurul Akbar Dakha Prabowo Al Ashari, Shoib Rizal Amin Suyitno Amin, Ihdi Anggoro, Abdurrobbil Falaq Dwi Annisa Salma Zakiyyah Ardhi Prabowo Arief Agoestanto Asani, Fityan Asih, Tri Sri Noor Asna, Alivia Nur Astuti, Raras Setya Astuti, Sri Ady Aziiza Andanawarih Utoyo Azizia, Ananda Jullailatul Azmi, Kholifatu Ulil Azzahra, Tsania Rahma Bambang Eko Susilo Bambang Eko Susilo Bambang Eko Susilo Bayujaga, Dian Budi Waluya Cholifah, Cholifah Damaryanti, Desi Dwi Daroinis Sa’adah Dedeh Kurniasih Dewi, Heni Lilia Dewi, Nuriana Rachmani Dr. Masrukan, Dr. Dwi Erna Novianti Dwijanto Dwijanto Dwijanto Dwijanto Dwijanto Dwijanto Dwijanto Dwijanto, Dwijanto Dwijayanto Dwijayanto E. Sulastri Edy Soedjoko EKA ANJARWATI Eko Supriyadi Emi Pujiastuti Endang Retno Winarti Endang Setyowati Endramawati, Tyas Ayun Enika Wulandari Erik Santoso ernita, ernita Farida Nursyahidah Fathonah, Ika Ariwanti Fauziah, Isyatul Fifqi Inayah Fitrianti, Dwi Agung Habaib, Taufik Nur Handayani, Kristina Haqiqi, Muhamad Irwan Hardi Suyitno Hasriani Ishak Hening Windria Hidayatun Nafiah, Hidayatun Hikmasari, Prihatina Ihdi Amin Ika Fitriani Fitriani Imanuel, Imanuel Indriani, Mikke Novia Iqbal Kharisudin Isnaini Rosyida, Isnaini Isnarto Isnarto Isnarto Isnarto Isnarto, Isnarto Isnarto, Isnarto Isti Hidayah Istiqomah Ambarwati Iwan Junaedi Iwan Junaedi Iwan Junaedi Jannah, Anita Nur Jatnika, Sugih Nugraha Junaedi , Iwan Kartono - Kartono Kartono Kartono, Kartono Khasmarawati, Vinda Khoirunnisa, Farah Dina Khunaeni, Sirilivia Kristina Wijayanti Kristina Wijayanti Kurniati, Chrisvonela Neri Lathifatun Ni'mah Lathifatun Ni'mah Liadiani, Anifa Mirza Lutfiani, Nurul M. Taufik Qurohman Ma'unah, Siti Malik, Ibnu Malik, Ibnu Marissa, Erlinda Isulis Marthinus Yohanes Ruamba Mashuri Mashuri Masrukan Masrukan Masturina Hamid, Ellya Maulana, Mukhamad Riziq Megita Dwi Pamungkas Megita Dwi Pamungkas Meilon, Beny Misaâ€™adah, Fedriana Moh. Asikin Mohammad Asikin Muhammad Kharis Muhammad Marzuqi Mujiasih Mujiasih Mulyono Mulyono Mulyono Mulyono Musaidah, Evadatul Muwahiddah, Ulil Nila Ubaidah Nino Adhi, Nuriana Rachmani Dewi Nio, Tan Hian Nofiyah, Noni Noriza Munahefi, Detalia Noverianto, Bebyd Nugroho, Samuel Defri Nur Hidayati Nurariva Siregar Nurhalisha, Erina Nuriana Rachmani Dewi (Nino Adhi) Nurintya, Fairuz Hanan Nurmutia, Halida Eka Nursasongko, Aditya Nuzul Putri Rahmawati Onwardono Rit Riyanto Pamungkas, Megita Dwi Pradina, Putri Dwi Pramesti, Santika Lya Diah Pramesti Pranawestu, Aditya Pratiwi, Yuninda Diah Priscilia, Priscilia Monica Praneswari Putri, Dwi Liana Wella Putriaji Hendikawati Rachmani Dewi, Nuriana Rahayu, Yenrika Kurniati Rahayuningsih, Rista Tri Ramadhani, Istika Ratri Ratnasari, Dwi Indah Rezky Bagus Pambudiarso, Rezky Bagus Riki Afiyanto Pratama Riyan Hidayat Riza Arifudin Roby Sugiarto, Dede Retno Rochmad - Rochmad Rochmad Rochmad Rochmad Rosyidatul 'Ulya S. B. Waluya, S. B. Sa'adah, Daroinis Saiful Marom Saiful Marom Santika Lya Diah Pramesti Saputri, Mike Sari, Fenny Tunjung Sari, Ratna Novita Savitri, Sukma Nur Sebastianus Fedi Setyaningsih, Lusianna Sri Solihah St. Budi Waluya Stevanus Budi Waluya Sudarsono Sudarsono Sugiman Sugiman Sugiman Sukestiyarno Sukestiyarno Sulandari, Dewi Sunarmi Sunarmi Sunarti Suryonegoro, Bayu Murti Susanti Susanti Tania, Nova Tommy Tanu Wijaya Vera Dewi Susanti Wahyu Ning Dewi Kumalaretna Wahyu Nur Annisa Walid Walid Walid, Walid Wardono Wardono Wardono Wardono Wardono Widiastuti, Ririn Wijaya, Teguh Ananta Winayus, Riyan Fikri Windarti, Desti Hana YL Sukestiyarno YL. Sukestiyarno Yoni Sunaryo Yuni Frazwanti Yuningsih Yuningsih Zaenuri Mastur

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